144430040 has 32 divisors (see below), whose sum is σ = 325404000. Its totient is φ = 57694464.

The previous prime is 144430037. The next prime is 144430049. The reversal of 144430040 is 40034441.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 144429994 and 144430021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144430049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34796 + ... + 38724.

It is an arithmetic number, because the mean of its divisors is an integer number (10168875).

Almost surely, 2^144430040 is an apocalyptic number.

144430040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144430040 is an abundant number, since it is smaller than the sum of its proper divisors (180973960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

144430040 is a wasteful number, since it uses less digits than its factorization.

144430040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4859 (or 4855 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 144430040 is about 12017.9049754939. The cubic root of 144430040 is about 524.6695304976.

Adding to 144430040 its reverse (40034441), we get a palindrome (184464481).

The spelling of 144430040 in words is "one hundred forty-four million, four hundred thirty thousand, forty".